Heater attachment for electric fans



Jan. 3, 1928. 1,655,193

A M. MURPHY HEATER ATTACHMENT FOR ELECTRIC FANS Original Filed Auz. 9. 1926 Patented Jan. 3, 1928.

MORTON MURPHY, F RUSHVILLE, INDIANA.

-HEA'1ER ATTACHMENT FOB ELECTRIC FANS.

Application med August a, 1926, Serial No. 128,095. Renewed November 3, 1927.

This invention relates to means for heating rooms, and particularly to an attachment to operate in cooperation with an electrically driven fan, whereby heat is produced from 6 a source of electricity and conveyed throughout the room by the blast of air created by the fan. w Referring to the accompanying drawing. Fig. l, is a side elevation of the heating to attachment as mounted upon .an electric fan; v

Fig. 2, a front elevation of the heating attachment only; 7 I

Fig. 3, a transverse section through the to heating attachment on the line 3-3 in Fig. 2; I

Fig. 4, a front" elevation on an enlarged scale of the base of the heating attachment with the cover plate removed; and

20 Fig. 5,'a vertical section through one side of the base on the line -5 in Fig. 4 on a still further enlarged scale.

Like characters of reference indicate like parts throughoutthe several views.

2 The heating attachment is intended to be operative in connection with any of the well "knownportable fans, such as the fan here generally designated by the numeral 10,

the fan having the base 11, the driving I motor 12, and the fan 13. The fan 13 is protected in the usual manner by the wire frame guard, having the front circumferential wire 15 and the rear circumferential wire 16 with the spacing wires 17, all in the I usual, customary and well known practice.

The heating attachment has a base plate 18, being essentially an annulus in form with the rearwardly projecting flange 19 entirely around its outer edge. The plate Q 18 is of a size to permit the flange 19 to .fit snugly over the front fan guard wire 15 as a means of positioning the plate 18 thereon.

Arranged, circumferentially around the front side 'of the plate 18 is a plurality of U insulator knobs 20 secured to the base by the screws 21 passing through the. knobs 20 and screw-threadedly engaged-in the plate 18.

' A continuous resistance wire 22 to serve as Q a heating element is strung over the plate 18 back and forth between and around the knobs 20 to have the terminals 23 which are placed-in a suitable electrical circuit by the externally leading cable 24.

I Pro ecting forwardly from the front face of the plate 18 are a number of ears 25, here shown as. three in number. These ears 25 are spaced slightly back from the edge of the plate 18 and serveas a means of positlonin the cover 26 on the plate 18 so that the side the flange 19 thereby affording a continuous smooth exterior surface over the flange and $1618 wall. The cover 26 is secured to'the base by passing screws 28 through the'cover 26 to engage screw-threadedly in the ears 25. The front of the cover 26 is substan-' tially op'en'here shown as having a plurality of finger-like guards 38 extending radially from the center.

To secure the base 18 and its cover 26 in place on the fan guard, I employ a plurality of adjustable brackets 30, one for each ear 25. One end of the bracket 30 has a hooked end 31 to engage around the back guard wire 16 (Fig. 1), and the forward end of the bracket 30 has a longitudinal slot 32 therethrough, through which slot 32, the screw 28 is passed, thebracket thus being capable of use on guards of diflering widths, as well as permitting the heating attach- '60 wall 27 of the cover 26 is flush with ment to be mounted snugly on the guard without vibration. v

Current is passed through the wire 22 to heat it and the fan 10 is set in operation,

whereby the blast of air set up by the fan is directedz through the base 18, past the wire 22 and out through the cover 26. As the air moves rapidly past the wire 22, the entire heating attachinent never becomes hot enough to cause burns to anyone accidently touching it, and at the same time, the heat being so rapidly conveyed from the wire, the room is quickly heated in a very satis factory manner by actual air currents set up by the fan.

The fan 10 here shown is of the oscillating type and the warmed current of air may thus be directed over a wide angle, the fan 10 being oscillated in the well known manner through worm gearing off the armature shaft within the housing 34 and the connecting rod 35 fixed by one end to the mounting bracket 36. The direction of the current of air may also be changed vertically through the pivoted connection 37 between the bracket 36 and the base 11.

I claim:

A fan heating attachment comprising abase plate formed as an annulus, a flange from the outer ed e y of insulating kno s reslstance wlre as a heat- I the knobs and across ears extending wardly from the p ate, a perforate cover over the plate and pos1tioned by said ears, a

forv mounting bracket hating a hooked rear end and a slotted forward end, and screws passing through the slots in the braokets 9 through the cover and said ears.

In testlmony whereof I atfix my signature. MORTON MURPHY 

